/*
 * Copyright (c) 2014, Mentor Graphics Corporation
 * All rights reserved.
 *
 * Copyright (c) 2016 Xilinx, Inc. All rights reserved.
 *
 * SPDX-License-Identifier: BSD-3-Clause
 */
#include "xscugic.h"

#define INTC_DEVICE_ID		XPAR_SCUGIC_0_DEVICE_ID

static XScuGic xInterruptController;

/* Interrupt Controller setup */
static int app_gic_initialize(void)
{
	u32 Status;
	XScuGic_Config *IntcConfig;	/* The configuration parameters of the interrupt controller */

	Xil_ExceptionDisable();

	/*
	 * Initialize the interrupt controller driver
	 */
	IntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
	if (NULL == IntcConfig) {
		return XST_FAILURE;
	}

	Status = XScuGic_CfgInitialize(&xInterruptController, IntcConfig,
				       IntcConfig->CpuBaseAddress);
	if (Status != XST_SUCCESS) {
		return XST_FAILURE;
	}

	/*
	 * Register the interrupt handler to the hardware interrupt handling
	 * logic in the ARM processor.
	 */
	Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_IRQ_INT,
			(Xil_ExceptionHandler)XScuGic_InterruptHandler,
			&xInterruptController);

	Xil_ExceptionEnable();

	return 0;
}

/* Main hw machinery initialization entry point, called from main()*/
/* return 0 on success */
int init_system(void)
{
	/* configure the global interrupt controller */
	app_gic_initialize();

	return 0;
}